Lettermail vs Sprout Social Influencer Marketing
Lettermail vs Sprout Social Influencer Marketing, compared side by side on 12 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: Lettermail is on 18/100 and Sprout Social Influencer Marketing on 70/100.
Where each one leads
Lettermail
- agent readiness: 64/100 against 57/100
Sprout Social Influencer Marketing
- our overall score: 70/100 against 18/100
- headcount: 1,771 against 8
- LinkedIn following: 172,029 against 5,931
At a glance
| Measure | Lettermail | Sprout Social Influencer Marketing |
|---|---|---|
| What it is | An AI-first email workspace that automates busywork, helps achieve inbox zero, and maintains a human touch. | Social media management and analytics platform for businesses. |
| Category | Email Productivity, AI Email Assistant, Workflow Automation, Inbox Management | Social Media Management, Marketing Automation, Customer Engagement, Social Analytics |
| Sells toBusiness model | B2B | B2B |
| Offering | Software | Platform |
| Founded | Not published | 2010 |
| Headquarters | Not published | Chicago, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Lettermail | Sprout Social Influencer Marketing |
|---|---|---|
| Employees | 8 | 1,771 |
| Headcount growthLast 12 months | Not published | -7.6% |
| Total funding | Not published | $103M |
| Latest round | Not published | Series D |
| LinkedIn followers | 5,931 | 172,029 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Lettermail | Sprout Social Influencer Marketing |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 18/100 | 70/100 |
| Traction | 10/100 | 60/100 |
| Team | Not published | 70/100 |
| Search visibility | 31/100 | 45/100 |
| Quality | Not published | 78/100 |
| Agent readinessHow well an AI agent can read and act on the site | C (64/100) | D (57/100) |
| Domain ratingLink authority, 0-100 | Not published | 90/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Lettermail | Sprout Social Influencer Marketing |
|---|---|---|
| Hosting | Not detected | AWS |
| CDN | Cloudflare | CloudFront |
| CMS | Framer | Not detected |
| Frameworks | Not detected | Next.js |
Lettermail vs Sprout Social Influencer Marketing: common questions
Which is better, Lettermail or Sprout Social Influencer Marketing?
On our 0-100 score Sprout Social Influencer Marketing rates higher (70/100 against 18/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 12 data points above: read the rows that match what you are buying for.
How do Lettermail and Sprout Social Influencer Marketing compare on the numbers?
Lettermail leads on agent readiness (64/100 against 57/100). Sprout Social Influencer Marketing leads on our overall score (70/100 against 18/100), headcount (1,771 against 8), LinkedIn following (172,029 against 5,931).
Read the full Lettermail review and pricing or the Sprout Social Influencer Marketing review and pricing. You can also browse other Lettermail alternatives we track.